BE870968A - Circuit de detection de boucle, d'impulsions de cadran et de declenchement de sonnerie - Google Patents

Circuit de detection de boucle, d'impulsions de cadran et de declenchement de sonnerie

Info

Publication number
BE870968A
BE870968A BE782057331A BE2057331A BE870968A BE 870968 A BE870968 A BE 870968A BE 782057331 A BE782057331 A BE 782057331A BE 2057331 A BE2057331 A BE 2057331A BE 870968 A BE870968 A BE 870968A
Authority
BE
Belgium
Prior art keywords
loop
detection circuit
trigger detection
dial pulse
bell trigger
Prior art date
Application number
BE782057331A
Other languages
English (en)
Inventor
R J Sabon
Original Assignee
Gte Automatic Electric Lab Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gte Automatic Electric Lab Inc filed Critical Gte Automatic Electric Lab Inc
Publication of BE870968A publication Critical patent/BE870968A/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/2272—Subscriber line supervision circuits, e.g. call detection circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
    • H04M19/026—Arrangements for interrupting the ringing current

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Telephonic Communication Services (AREA)
BE782057331A 1977-12-29 1978-10-03 Circuit de detection de boucle, d'impulsions de cadran et de declenchement de sonnerie BE870968A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/865,761 US4166928A (en) 1977-12-29 1977-12-29 Loop, dial pulse and ring trip detection circuit

Publications (1)

Publication Number Publication Date
BE870968A true BE870968A (fr) 1979-02-01

Family

ID=25346171

Family Applications (1)

Application Number Title Priority Date Filing Date
BE782057331A BE870968A (fr) 1977-12-29 1978-10-03 Circuit de detection de boucle, d'impulsions de cadran et de declenchement de sonnerie

Country Status (4)

Country Link
US (1) US4166928A (fr)
BE (1) BE870968A (fr)
CA (1) CA1116329A (fr)
IT (1) IT1101596B (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4326103A (en) * 1980-06-02 1982-04-20 Gte Automatic Electric Labs Inc. Coin telephone monitor circuit
US6289100B1 (en) 1999-03-09 2001-09-11 Hubbell Incorporated Communications station having hall effect device for controlling hookswitch operations

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4099032A (en) * 1977-03-25 1978-07-04 Wescom, Inc. Loop current detector
US4104488A (en) * 1977-05-19 1978-08-01 International Standard Electric Corporation Subscriber line circuit

Also Published As

Publication number Publication date
US4166928A (en) 1979-09-04
IT1101596B (it) 1985-10-07
IT7831205A0 (it) 1978-12-22
CA1116329A (fr) 1982-01-12

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: GTE AUTOMATIC ELECTRIC LABORATORIES INC.

Effective date: 19871031